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<h1>COS</h1>
<p>COS 函数可得出以弧度表示的角度的余弦值。</p>
<div class="HIStrings"><p><strong class="Term">COS</strong>(<em>弧度</em>)</p>
    <div class="HISubString"><p><em class="Term">弧度： </em><a href="ffa361b4f72.html#ffa361b4f72"
                                                             class="xRef Aside">数字值</a>，代表角度，用弧度表示。<span
            class="DescriptionNotString">尽管<em>弧度</em>可以是任何数字，但其范围通常在 –π 至 +π（–pi 至 +pi）内。</span></p></div>
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        <th scope="col"><p class="TableHead">示例</p></th>
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        <td><p>=COS(1) 将得出 0.54030230586814，即弧度为 1（约为 57.3 度）的余弦值。</p>
            <p>=COS(RADIANS(60)) 将得出 0.5，即 60 度的余弦值。</p>
            <p>=COS(PI()/3) 将返回 0.5，即弧度为 π/3（60 度）的余弦值。</p>
            <p>=COS(PI()) 将得出 -1，即弧度为 π（180 度）的余弦值。</p></td>
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<div class="LinkUniversal"><strong>另请参阅</strong><a href="ffa5c74880.html#ffa5c74880" class="xRef AppleTopic">ACOS</a><a
        href="ffa5c9a390.html#ffa5c9a390" class="xRef AppleTopic">ACOSH</a><a href="ffa5c97cc4.html#ffa5c97cc4"
                                                                              class="xRef AppleTopic">COSH</a><a
        href="ffa5cb3ce6.html#ffa5cb3ce6" class="xRef AppleTopic">DEGREES</a><a href="ffa5c6451c.html#ffa5c6451c"
                                                                                class="xRef AppleTopic">SIN</a><a
        href="ffa5c66235.html#ffa5c66235" class="xRef AppleTopic">TAN</a></div>
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